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Finding the Fourth Proportional to 389,807.36, 584,944.34 and 168,191.36

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Solution

The fourth proportional to 389,807.36, 584,944.34 and 168,191.36 is: 252,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,807.36 : 584,944.34 = 168,191.36 : x
  2. Step 2: Convert to fraction form
    389,807.36/584,944.34 = 168,191.36/x
  3. Step 3: Cross multiply
    389,807.36x = 584,944.34 × 168,191.36
  4. Step 4: Simplify right side
    389,807.36x = 98,382,584,068.90
  5. Step 5: Solve for x
    x = 98,382,584,068.90/389,807.36
  6. Step 6: Final answer
    x = 252,387.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.